We're putting tile in a bathroom, and I need to remove an American Standard T6179/80/81 spout, but I can't get it to budge in the slightest. I have what is probably a dumb question, but I'll ask it: Do I need to first remove the diverter? I can't see how it would affect being able to unscrew the spout, but thought I'd ask. By the way, I want to be able to reuse this spout after I get it off, as it's in perfect condition, so hopefully there's a way to budge it without damaging its finish.